UniJump

UniJump is a free, open-source Chrome extension that brings ChatGPT to whatever page a user is already on, without switching tabs. Pressing a keyboard shortcut (Cmd+J on Mac, Alt+J on Windows) opens a small chat modal over the current site, so someone can ask a question, get writing help, or paraphrase a passage without leaving what they were reading or working on. The extension also includes a standalone paraphrasing tool for rewording text quickly. The tool targets everyday web users who want faster access to ChatGPT for writing, research, and general question-answering while browsing, rather than professionals with a specialized workflow. It requires an OpenAI account to actually talk to ChatGPT, since UniJump itself is just the access layer, not a model provider. Installation only happens through the Chrome Web Store, so it does not run on other browsers or as a standalone app. UniJump publishes its source code openly so users can verify what the extension does, and its developers state plainly that no personal data is stored. There is no signup process and no paid tier: the extension is entirely free. One limitation is that its feature set is narrow by design, a quick-access chat modal and a paraphraser, rather than a broader suite of writing or research tools, and it depends entirely on the user already having their own ChatGPT account.